<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<form action="/Demo07Servlet" method="post">
<input type="text" placeholder="请输入用户名" name="username">
<input type="text" placeholder="请输入密码" name="password">

<input type="checkbox" name="hobby" value="game">游戏
<input type="checkbox" name="hobby" value="study">学习
    <br>
<input type="submit" value="注册">

</form>

</body>
</html>